Evolution Through Natural Selection Survival of the fittest'

1
Evolution Through Natural SelectionSurvival of
the fittest.
Physical Environment -climate -weather -soils
Survivor Reproduction
Genetic Diversity
New Population
Biological Environment -competition -predation
-parasitization
2
Mutation and Natural Selection
Change in Abilities or Appearance
(Phenotype)
Change in Genetic Material (Genotype)

• Mutations are changes in the structure of the DNA
  due to copying errors in gamete formation or due
  to the effects of mutagenic substances.
• Some mutations may cause the organism to fail to
  develop (lethal mutation).
• Others may have little or no effect on an
  organisms success.